Isolator



FIG. 1 is a front perspective view of the isolator showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side elevational view, the other side being a mirror image of the side shown;

FIG. 5 is an end view, the other end being a mirror image of the end shown; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for an isolator, as shown and described. 